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cti-python-stix2/stix2/test/test_memory.py

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import os
import shutil
import pytest
from stix2 import (Bundle, Campaign, CustomObject, Filter, Identity, Indicator,
Malware, MemorySource, MemoryStore, Relationship,
properties)
from stix2.datastore import make_id
from .constants import (CAMPAIGN_ID, CAMPAIGN_KWARGS, IDENTITY_ID,
IDENTITY_KWARGS, INDICATOR_ID, INDICATOR_KWARGS,
MALWARE_ID, MALWARE_KWARGS, RELATIONSHIP_IDS)
IND1 = {
"created": "2017-01-27T13:49:53.935Z",
"id": "indicator--d81f86b9-975b-bc0b-775e-810c5ad45a4f",
"labels": [
"url-watchlist"
],
"modified": "2017-01-27T13:49:53.935Z",
"name": "Malicious site hosting downloader",
"pattern": "[url:value = 'http://x4z9arb.cn/4712']",
"type": "indicator",
"valid_from": "2017-01-27T13:49:53.935382Z"
}
IND2 = {
"created": "2017-01-27T13:49:53.935Z",
"id": "indicator--d81f86b9-975b-bc0b-775e-810c5ad45a4f",
"labels": [
"url-watchlist"
],
"modified": "2017-01-27T13:49:53.935Z",
"name": "Malicious site hosting downloader",
"pattern": "[url:value = 'http://x4z9arb.cn/4712']",
"type": "indicator",
"valid_from": "2017-01-27T13:49:53.935382Z"
}
IND3 = {
"created": "2017-01-27T13:49:53.935Z",
"id": "indicator--d81f86b9-975b-bc0b-775e-810c5ad45a4f",
"labels": [
"url-watchlist"
],
"modified": "2017-01-27T13:49:53.936Z",
"name": "Malicious site hosting downloader",
"pattern": "[url:value = 'http://x4z9arb.cn/4712']",
"type": "indicator",
"valid_from": "2017-01-27T13:49:53.935382Z"
}
IND4 = {
"created": "2017-01-27T13:49:53.935Z",
"id": "indicator--d81f86b8-975b-bc0b-775e-810c5ad45a4f",
"labels": [
"url-watchlist"
],
"modified": "2017-01-27T13:49:53.935Z",
"name": "Malicious site hosting downloader",
"pattern": "[url:value = 'http://x4z9arb.cn/4712']",
"type": "indicator",
"valid_from": "2017-01-27T13:49:53.935382Z"
}
IND5 = {
"created": "2017-01-27T13:49:53.935Z",
"id": "indicator--d81f86b8-975b-bc0b-775e-810c5ad45a4f",
"labels": [
"url-watchlist"
],
"modified": "2017-01-27T13:49:53.935Z",
"name": "Malicious site hosting downloader",
"pattern": "[url:value = 'http://x4z9arb.cn/4712']",
"type": "indicator",
"valid_from": "2017-01-27T13:49:53.935382Z"
}
IND6 = {
"created": "2017-01-27T13:49:53.935Z",
"id": "indicator--d81f86b9-975b-bc0b-775e-810c5ad45a4f",
"labels": [
"url-watchlist"
],
"modified": "2017-01-31T13:49:53.935Z",
"name": "Malicious site hosting downloader",
"pattern": "[url:value = 'http://x4z9arb.cn/4712']",
"type": "indicator",
"valid_from": "2017-01-27T13:49:53.935382Z"
}
IND7 = {
"created": "2017-01-27T13:49:53.935Z",
"id": "indicator--d81f86b8-975b-bc0b-775e-810c5ad45a4f",
"labels": [
"url-watchlist"
],
"modified": "2017-01-27T13:49:53.935Z",
"name": "Malicious site hosting downloader",
"pattern": "[url:value = 'http://x4z9arb.cn/4712']",
"type": "indicator",
"valid_from": "2017-01-27T13:49:53.935382Z"
}
IND8 = {
"created": "2017-01-27T13:49:53.935Z",
"id": "indicator--d81f86b8-975b-bc0b-775e-810c5ad45a4f",
"labels": [
"url-watchlist"
],
"modified": "2017-01-27T13:49:53.935Z",
"name": "Malicious site hosting downloader",
"pattern": "[url:value = 'http://x4z9arb.cn/4712']",
"type": "indicator",
"valid_from": "2017-01-27T13:49:53.935382Z"
}
STIX_OBJS2 = [IND6, IND7, IND8]
STIX_OBJS1 = [IND1, IND2, IND3, IND4, IND5]
@pytest.fixture
def mem_store():
yield MemoryStore(STIX_OBJS1)
@pytest.fixture
def mem_source():
yield MemorySource(STIX_OBJS1)
@pytest.fixture
def rel_mem_store():
cam = Campaign(id=CAMPAIGN_ID, **CAMPAIGN_KWARGS)
idy = Identity(id=IDENTITY_ID, **IDENTITY_KWARGS)
ind = Indicator(id=INDICATOR_ID, **INDICATOR_KWARGS)
mal = Malware(id=MALWARE_ID, **MALWARE_KWARGS)
rel1 = Relationship(ind, 'indicates', mal, id=RELATIONSHIP_IDS[0])
rel2 = Relationship(mal, 'targets', idy, id=RELATIONSHIP_IDS[1])
rel3 = Relationship(cam, 'uses', mal, id=RELATIONSHIP_IDS[2])
stix_objs = [cam, idy, ind, mal, rel1, rel2, rel3]
yield MemoryStore(stix_objs)
@pytest.fixture
def fs_mem_store(request, mem_store):
filename = 'memory_test/mem_store.json'
mem_store.save_to_file(filename)
def fin():
# teardown, excecuted regardless of exception
shutil.rmtree(os.path.dirname(filename))
request.addfinalizer(fin)
return filename
def test_memory_source_get(mem_source):
resp = mem_source.get("indicator--d81f86b8-975b-bc0b-775e-810c5ad45a4f")
assert resp["id"] == "indicator--d81f86b8-975b-bc0b-775e-810c5ad45a4f"
def test_memory_source_get_nonexistant_object(mem_source):
resp = mem_source.get("tool--d81f86b8-975b-bc0b-775e-810c5ad45a4f")
assert resp is None
def test_memory_store_all_versions(mem_store):
# Add bundle of items to sink
mem_store.add(dict(id="bundle--%s" % make_id(),
objects=STIX_OBJS2,
spec_version="2.0",
type="bundle"))
resp = mem_store.all_versions("indicator--d81f86b9-975b-bc0b-775e-810c5ad45a4f")
assert len(resp) == 1 # MemoryStore can only store 1 version of each object
def test_memory_store_query(mem_store):
query = [Filter('type', '=', 'malware')]
resp = mem_store.query(query)
assert len(resp) == 0
def test_memory_store_query_single_filter(mem_store):
query = Filter('id', '=', 'indicator--d81f86b8-975b-bc0b-775e-810c5ad45a4f')
resp = mem_store.query(query)
assert len(resp) == 1
def test_memory_store_query_empty_query(mem_store):
resp = mem_store.query()
# sort since returned in random order
resp = sorted(resp, key=lambda k: k['id'])
assert len(resp) == 2
assert resp[0]['id'] == 'indicator--d81f86b8-975b-bc0b-775e-810c5ad45a4f'
assert resp[0]['modified'] == '2017-01-27T13:49:53.935Z'
assert resp[1]['id'] == 'indicator--d81f86b9-975b-bc0b-775e-810c5ad45a4f'
assert resp[1]['modified'] == '2017-01-27T13:49:53.936Z'
def test_memory_store_query_multiple_filters(mem_store):
mem_store.source.filters.add(Filter('type', '=', 'indicator'))
query = Filter('id', '=', 'indicator--d81f86b8-975b-bc0b-775e-810c5ad45a4f')
resp = mem_store.query(query)
assert len(resp) == 1
def test_memory_store_save_load_file(mem_store, fs_mem_store):
filename = fs_mem_store # the fixture fs_mem_store yields filename where the memory store was written to
# STIX2 contents of mem_store have already been written to file
# (this is done in fixture 'fs_mem_store'), so can already read-in here
contents = open(os.path.abspath(filename)).read()
assert '"id": "indicator--d81f86b9-975b-bc0b-775e-810c5ad45a4f",' in contents
assert '"id": "indicator--d81f86b8-975b-bc0b-775e-810c5ad45a4f",' in contents
mem_store2 = MemoryStore()
mem_store2.load_from_file(filename)
assert mem_store2.get("indicator--d81f86b8-975b-bc0b-775e-810c5ad45a4f")
assert mem_store2.get("indicator--d81f86b9-975b-bc0b-775e-810c5ad45a4f")
def test_memory_store_add_invalid_object(mem_store):
ind = ('indicator', IND1) # tuple isn't valid
with pytest.raises(TypeError) as excinfo:
mem_store.add(ind)
assert 'stix_data expected to be' in str(excinfo.value)
assert 'a python-stix2 object' in str(excinfo.value)
assert 'JSON formatted STIX' in str(excinfo.value)
assert 'JSON formatted STIX bundle' in str(excinfo.value)
def test_memory_store_object_with_custom_property(mem_store):
camp = Campaign(name="Scipio Africanus",
objective="Defeat the Carthaginians",
x_empire="Roman",
allow_custom=True)
mem_store.add(camp, True)
camp_r = mem_store.get(camp.id)
assert camp_r.id == camp.id
assert camp_r.x_empire == camp.x_empire
def test_memory_store_object_with_custom_property_in_bundle(mem_store):
camp = Campaign(name="Scipio Africanus",
objective="Defeat the Carthaginians",
x_empire="Roman",
allow_custom=True)
bundle = Bundle(camp, allow_custom=True)
mem_store.add(bundle, True)
bundle_r = mem_store.get(bundle.id)
camp_r = bundle_r['objects'][0]
assert camp_r.id == camp.id
assert camp_r.x_empire == camp.x_empire
def test_memory_store_custom_object(mem_store):
@CustomObject('x-new-obj', [
('property1', properties.StringProperty(required=True)),
])
class NewObj():
pass
newobj = NewObj(property1='something')
mem_store.add(newobj, True)
newobj_r = mem_store.get(newobj.id)
assert newobj_r.id == newobj.id
assert newobj_r.property1 == 'something'
def test_relationships(rel_mem_store):
mal = rel_mem_store.get(MALWARE_ID)
resp = rel_mem_store.relationships(mal)
assert len(resp) == 3
assert any(x['id'] == RELATIONSHIP_IDS[0] for x in resp)
assert any(x['id'] == RELATIONSHIP_IDS[1] for x in resp)
assert any(x['id'] == RELATIONSHIP_IDS[2] for x in resp)
def test_relationships_by_type(rel_mem_store):
mal = rel_mem_store.get(MALWARE_ID)
resp = rel_mem_store.relationships(mal, relationship_type='indicates')
assert len(resp) == 1
assert resp[0]['id'] == RELATIONSHIP_IDS[0]
def test_relationships_by_source(rel_mem_store):
resp = rel_mem_store.relationships(MALWARE_ID, source_only=True)
assert len(resp) == 1
assert resp[0]['id'] == RELATIONSHIP_IDS[1]
def test_relationships_by_target(rel_mem_store):
resp = rel_mem_store.relationships(MALWARE_ID, target_only=True)
assert len(resp) == 2
assert any(x['id'] == RELATIONSHIP_IDS[0] for x in resp)
assert any(x['id'] == RELATIONSHIP_IDS[2] for x in resp)
def test_relationships_by_target_and_type(rel_mem_store):
resp = rel_mem_store.relationships(MALWARE_ID, relationship_type='uses', target_only=True)
assert len(resp) == 1
assert any(x['id'] == RELATIONSHIP_IDS[2] for x in resp)
def test_relationships_by_target_and_source(rel_mem_store):
with pytest.raises(ValueError) as excinfo:
rel_mem_store.relationships(MALWARE_ID, target_only=True, source_only=True)
assert 'not both' in str(excinfo.value)
def test_related_to(rel_mem_store):
mal = rel_mem_store.get(MALWARE_ID)
resp = rel_mem_store.related_to(mal)
assert len(resp) == 3
assert any(x['id'] == CAMPAIGN_ID for x in resp)
assert any(x['id'] == INDICATOR_ID for x in resp)
assert any(x['id'] == IDENTITY_ID for x in resp)
def test_related_to_by_source(rel_mem_store):
resp = rel_mem_store.related_to(MALWARE_ID, source_only=True)
assert len(resp) == 1
assert any(x['id'] == IDENTITY_ID for x in resp)
def test_related_to_by_target(rel_mem_store):
resp = rel_mem_store.related_to(MALWARE_ID, target_only=True)
assert len(resp) == 2
assert any(x['id'] == CAMPAIGN_ID for x in resp)
assert any(x['id'] == INDICATOR_ID for x in resp)
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